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  • 2-Methyl-2-butanol, 98%

    Alfa Aesar

    Synonym(s): tert-Amyl alcohol, 1,1-Dimethyl-1-propanol Formula: C5H12O Formula weight: 88.15 Purity: 98% CAS Number: 75-85-4 UN Number: UN1105 Hazard Class: 3 Packing Group: II Harmonized Tariff Code:  2905.19 Hazard Statements: H225-H332-H315-H335 Highly flammable…

  • Magnesium Sulfate, Anhydrous, 99.5% min

    Alfa Aesar

    CAS Number: 7487-88-9 MDL: MFCD00011110 EINECS: 231-298-2 Formula: MgSO4 Formula Weight: 120.37 Form: powder Melting Point: 1124° dec. Density: 2.66 Sensitivity: Hygroscopic Applications Suitable for sensitive…

  • Manganese(II) sulfate monohydrate, ACS, 98.0-101.0%

    Alfa Aesar

    Formula: MnSO4 H2O Formula weight: 169.02 (151.00anhy) Purity: 98.0-101.0% CAS Number: 10034-96-5 UN Number: UN3077 Hazard Class: 9 Packing Group: III Harmonized Tariff Code:  2833.29 Hazard Statements: H373 May cause damage to organs through prolonged or repeated…

  • 4-Methylcatechol, 96%

    Alfa Aesar

    Synonym(s): 3,4-Dihydroxytoluene Formula: C7H8O2 Formula weight: 124.14 Purity: 96% CAS Number: 452-86-8 Harmonized Tariff Code:  2907.29 Hazard Statements: H301-H311-H332-H315-H319-H335 Toxic if swallowed. Toxic in contact with skin. Harmful if inhaled. Causes skin irritation.…

  • Murexide

    Alfa Aesar

    Synonym(s): Ammonium purpurate Formula: C8H8N6O6 Formula weight: 284.19 CAS Number: 3051-09-0 Harmonized Tariff Code:  2933.54

  • Magnesium chloride, anhydrous, 99%

    Alfa Aesar

    Formula: MgCl2 Formula weight: 95.22 Purity: 99% CAS Number: 7786-30-3 Harmonized Tariff Code:  2827.31

  • Magnesium powder, -325 mesh, 99.8%

    Alfa Aesar

    Purity: 99.8% CAS Number: 7439-95-4 UN Number: UN1418 Hazard Class: 4.3 Packing Group: II Harmonized Tariff Code:  8104.30 Hazard Statements: H228-H251-H261 Flammable solid. Self-heating: may catch fire. In contact with water releases flammable gas. Precautionary Statements: …

  • Methyl 3-methoxy-4-nitrobenzoate, 98%

    Alfa Aesar

    Synonym(s): 3-Methoxy-4-nitrobenzoic acid methyl ester Formula: C9H9NO5 Formula weight: 211.18 Purity: 98% CAS Number: 5081-37-8 Harmonized Tariff Code:  2918.99

  • 4-Methyl-1,10-phenanthroline

    Alfa Aesar

    Formula: C13H10N2 Formula weight: 194.24 CAS Number: 31301-28-7 Harmonized Tariff Code:  2933.99 Hazard Statements: H301-H315-H319-H335 Toxic if swallowed. Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. Precautionary Statements: …

  • Magnesium sulfate heptahydrate, 99+%

    Alfa Aesar

    Synonym(s): Epsom salt Formula: MgSO4 7H2O Formula weight: 246.48 (120.37anhy) Purity: 99+% CAS Number: 10034-99-8 Harmonized Tariff Code:  2833.21

  • 2-Methylpentane, 99+%

    Alfa Aesar

    Synonym(s): Isohexane Formula: C6H14 Formula weight: 86.18 Purity: 99+% CAS Number: 107-83-5 UN Number: UN1208 Hazard Class: 3 Packing Group: II Harmonized Tariff Code:  2901.10 Hazard Statements: H225-H304-H315-H336 Highly flammable liquid and vapour. May be fatal if…

  • Manganese(II) sulfate monohydrate, 97%

    Alfa Aesar

    Formula: MnSO4 H2O Formula weight: 169.02 (151.00anhy) Purity: 97% CAS Number: 10034-96-5 UN Number: UN3077 Hazard Class: 9 Packing Group: III Harmonized Tariff Code:  2833.29 Hazard Statements: H373 May cause damage to organs through prolonged or repeated exposure. …

  • Malonic acid, 99%

    Alfa Aesar

    Synonym(s): Propanedioic acid Formula: C3H4O4 Formula weight: 104.06 Purity: 99% CAS Number: 141-82-2 Packing Group: III Harmonized Tariff Code:  2917.19 Hazard Statements: H301-H318-H315-H335 Toxic if swallowed. Causes serious eye damage. Causes skin irritation. May cause…

  • Manganese(III) phosphate hydrate, 99%

    Alfa Aesar

    Formula: MnPO4 xH2O Formula weight: 149.91(anhy) Purity: 99% CAS Number: 104663-56-1 Harmonized Tariff Code:  2835.29 Hazard Statements: H301-H315-H319-H335 Toxic if swallowed. Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. Precautionary…

  • N-Methylaniline, 98%

    Alfa Aesar

    Synonym(s): Monomethylaniline Formula: C7H9N Formula weight: 107.16 Purity: 98% CAS Number: 100-61-8 UN Number: UN2294 Hazard Class: 6.1 Packing Group: III Harmonized Tariff Code:  2921.42 Hazard Statements: H301-H311-H331-H373-H227 Toxic if swallowed. Toxic in contact…

  • Methyl 2-amino-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carboxylate, 96%

    Alfa Aesar

    Synonym(s): 2-Amino-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carboxylic acid methyl ester Formula: C9H11NO2S Formula weight: 197.26 Purity: 96% CAS Number: 184174-80-9 Harmonized Tariff Code:  2934.99 Hazard Statements: H315-H319-H335 Causes skin irritation. Causes serious eye…

  • Methyl Green, zinc chloride

    Alfa Aesar

    Synonym(s): C.I. 42590 Formula: C27H35Cl2N3.ZnCl2 Formula weight: 653.24 CAS Number: 7114-03-6 Harmonized Tariff Code:  3204.19 Hazard Statements: H315-H319-H335 Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. Precautionary Statements: …

  • Molecular sieves, 4A, 3-5mm (0.12-0.20in) beads

    Alfa Aesar

    CAS Number: 70955-01-0 Harmonized Tariff Code:  3824.90

  • MES monohydrate, 98%

    Alfa Aesar

    Synonym(s): 4-Morpholineethanesulfonic acid monohydrate, 2-(4-Morpholinyl)ethanesulfonic acid monohydrate Formula: C6H13NO4S H2O Formula weight: 213.26 (195.24anhy) Purity: 98% CAS Number: 145224-94-8 Harmonized Tariff Code:  2934.99 Hazard Statements: H315-H319-H335 Causes skin…

  • Methyl mercaptoacetate, 98%

    Alfa Aesar

    Synonym(s): Mercaptoacetic acid methyl ester, Methyl thioglycolate Formula: HSCH2COOCH3 Formula weight: 106.14 Purity: 98% CAS Number: 2365-48-2 UN Number: UN1228 Hazard Class: 3 Packing Group: III Harmonized Tariff Code:  2930.90 Hazard Statements: …

  • Mercury(II) iodide, ACS, 99.0% min (Assay-dried basis)

    Alfa Aesar

    Synonym(s): Mercury iodide, red, Mercury diiodide Formula: HgI2 Formula weight: 454.40 Purity: 99.0% min (Assay-dried basis) CAS Number: 7774-29-0 UN Number: UN1638 Hazard Class: 6.1 Packing Group: II Harmonized Tariff Code:  2852.10 Hazard Statements: …

  • Mercaptoacetic acid, 97+%

    Alfa Aesar

    Synonym(s): Thioglycolic acid Formula: C2H4O2S Formula weight: 92.11 Purity: 97+% CAS Number: 68-11-1 UN Number: UN1940 Hazard Class: 8 Packing Group: II Harmonized Tariff Code:  2930.90 Hazard Statements: H301-H311-H331-H314 Toxic if swallowed. Toxic in contact with…

  • 4-Methylumbelliferone, 97%

    Alfa Aesar

    Synonym(s): 7-Hydroxy-4-methylcoumarin, Hymecromone Formula: C10H8O3 Formula weight: 176.17 Purity: 97% CAS Number: 90-33-5 Harmonized Tariff Code:  2932.20 Hazard Statements: H315-H319-H335 Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.…

  • 2-Methyl-1,3-dioxolane, 98%

    Alfa Aesar

    Synonym(s): Acetaldehyde ethylene acetal Formula: C4H8O2 Formula weight: 88.11 Purity: 98% CAS Number: 497-26-7 UN Number: UN1993 Hazard Class: 3 Packing Group: II Harmonized Tariff Code:  2932.99 Hazard Statements: H225-H319 Highly flammable liquid and vapour. Causes…

  • Methyl 3-mercaptopropionate, 98%

    Alfa Aesar

    Synonym(s): 3-Mercaptopropionic acid methyl ester Formula: HSCH2CH2CO2CH3 Formula weight: 120.17 Purity: 98% CAS Number: 2935-90-2 UN Number: UN1228 Hazard Class: 3 Packing Group: II Harmonized Tariff Code:  2930.90 Hazard Statements: H301-H331-H226-H312-H315-H319-H335 …

  • Mercury(II) acetate, ACS, 98.0% min

    Alfa Aesar

    Formula: C4H6HgO4 Formula weight: 318.68 Purity: 98.0% min CAS Number: 1600-27-7 UN Number: UN1629 Hazard Class: 6.1 Packing Group: II Harmonized Tariff Code:  2852.10 Hazard Statements: H300-H310-H330-H373 Fatal if swallowed. Fatal in contact with skin. Fatal if inhaled.…

  • Methyl Red

    Alfa Aesar

    Synonym(s): C.I. 13020 Formula: C15H15N3O2 Formula weight: 269.30 CAS Number: 493-52-7 Harmonized Tariff Code:  2927.00

  • ^b-D-Maltose octaacetate, 98%

    Alfa Aesar

    Synonym(s): Octa-O-acetyl-^b-D-maltose Formula: C28H38O19 Formula weight: 678.60 Purity: 98% CAS Number: 22352-19-8 Harmonized Tariff Code:  2940.00

  • Metaphosphoric acid, 39-43%, bal. NaPO{3} (Stabilizer)

    Alfa Aesar

    Formula: HPO3 Formula weight: 79.98 CAS Number: 37267-86-0 UN Number: UN3260 Hazard Class: 8 Packing Group: III Harmonized Tariff Code:  2809.20 Hazard Statements: H314-H335 Causes severe skin burns and eye damage. May cause respiratory irritation. Precautionary Statements:…

  • Magnesium trisilicate

    Alfa Aesar

    Synonym(s): Magnesium silicate Formula: Mg2O8Si3 Formula weight: 260.86 CAS Number: 14987-04-3 Harmonized Tariff Code:  2839.90

  • Magnesium silicate, 99% (metals basis)

    Alfa Aesar

    Formula: Mg2O4Si Formula weight: 140.71 Purity: 99% (metals basis) CAS Number: 1343-88-0 Harmonized Tariff Code:  2839.90 Hazard Statements: H332 Harmful if inhaled. Precautionary Statements: P261-P271-P304+P340-P312 Avoid breathing dust/fume/gas/mist/vapours/spray. Use only…

  • Methyl Orange, 0.1% w/v aq. soln.

    Alfa Aesar

    Formula: C14H14N3NaO3S Formula weight: 327.34 Harmonized Tariff Code:  2927.00

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